Answer Key

1 a.

500

1 b.

500

2 a.

70

2 b.

40

3 a.

9

3 b.

8

4 a.

200

4 b.

4

5 a.

40

5 b.

300

6 a.

30

6 b.

400

7 a.

200

7 b.

200

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